GF111D 500A 1000V DC power source with DC energy meter calibrator

DC reference energy meter

The model GF111D high precision DC reference energy meter are used in electric power, metrology, military industry, manufacturing and scientific research institutes and other DC measurement fields or laboratories. Characteristic features of the GF111D are its wide measuring range, high accuracy and high tolerance to unwanted external influences. Its voltage range from 0 to 1200V, current range from 0 to 600A, DC reference standard of accuracy 0.02% or 0.01%. The GF111D DC reference standard offers high functionality combined with an excellent menu guided operation via built-in keyboards and colored 8 inch color touch LCD-display. It can automatically test DC energy meter error, energy accumulation , error of time of day. It have been used many by ISO17025 electrical lab in the world.



  • 0-600A/0-1200V;
  • 8 inch TFT touch screen;
  • Accuracy 0.02% or 0.01%;
  • Using 24bit A/D sampling technology;
  • Recorder 10000 sets energy meter data;
  • Programmable multi-plan for testing DC meter;
  • Electrical isolation between U and I channels;
  • ISO17025 electrical metrology laboratory standard;


  • User friendly menu guided operation;
  • As high precision DC reference standard;
  • DC electric energy accumulation function;
  • Easy verification and analysis of DC meter;
  • Testing all kinds of DC ammeter, DC voltmeter;
  • Statistical U & I of maximum and minimum values;
  • Automatic operation without need of an external PC;
  • Testing all kinds of DC energy meter, DC power meter;


Electrical parameters 
Accuracy 0.05%, 0.02%, 0.01%
Power Supply One Phase AC 180-265V, or 85-135V, frequency 50/60Hz.
Power consumption 20VA
DC Voltage Measurement
Range 10mV, 100mV, 1V, 10V, 30V, 100V, 300V, 1000V (max 1200V)
Accuracy ±(0.012%RD+0.008%RG)
DC Current Measurement
Range 0.7mA, 3.5mA, 14mA, 35mA, 140mA, 700mA, 1A, 2A, 5A, 10A, 20A, 50A, 100A, 500A (max 600A)
Accuracy ±(0.012%RD+0.008%RG)
DC Power Measurement
Power accuracy ±0.02%, 0.01%
DC Power Energy Measurement Error
power energy ±0.02%, 0.01%
Power Pulse Output 
Power Pulse Output  20KHz 
Power Pulse Input
Energy pulse input 20KHz
LCD Display 8 inch 800x600 touch TFT
Energy accumulation Yes
Self-calibration Yes
Data storage Yes
Pulse input cable Yes
Pulse output cable Yes
Pulse optical sampler Optional
PC software Optional
Communication port USB, RS232, 10/100M LAN
Standard IEC 62053-21,22, 23, 41 Ed.1; IEC 60736; ANSI C12.20-2002;
JJG-842-2017; JJG596-2012; JJG 1085-2013; JJF 68-2019;
DL/T 1478-2015; DL/T 448-2016; GB/T 33708-2017;
Isolation protection IEC 61010-1:2001
Measurement Category 300 V CAT III, 600 V CAT II
Degree of protection IP40
Declaration of conformity CE & CNAS certified
Mechanical parameters 
Dimensions (W×D×H) (mm) 400x440x290 
Weight (kg) 12
Environmental conditions 
Ambient temperature -10°C to +40°C
Storage temperature -20°C to +65°C
Relative humidity 10%-85%
Temperature coefficient ≤0.0005% /℃
Influence of external fields ≤0.05 %/mT
(1) RG means range, the same as below;
(2) RD means the setted harmonic content, harmonic can be a single output, also multiple output.

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